Start another one
Wait a second... isn't there already at least one big war in the pipeline? With China?
A little lower intensity, but still a potential disaster, are Trump's musings regarding a potential unilateral operation in Mexico against the drug cartels. Mexico's new lady president, already expressed shock at these statements.
Given that America didn't mind sending DEA agents on operations not agreed on with the Mexican government, I can totally see America sending some Navy SEALS into Mexico to really f*ck sh*t up. That could easily blow up in your face.
If Haiti continues its descent into hell, Trump might decide one day that it should be occupied and temporarily administered by the United States.
As we speak, Americans and Russians are swapping bases in the North and East of Syria. In the past 72 hrs, America has targeted numerous ISIS positions there with air strikes. ISIS is raising its head again after the collapse of the Assad government. So you may very well end up in Syria also.
Americans should never have to worry about the next war - there's always one in the books.